Improvement in elastic roofing compositions



THOMAS E. WOOD, OF KNOXVILLE, PENNSYLVANIA.

IMPROVEMENT IN ELASTIC ROOFING COMPOSITIONS.

Specification forming part of Letters Patent No. 82,507,

dated September 29, 1868.

T0 all whom it may conce/ru.'

Be it known that I, THOMAS E. VVooD, of Knoxville, in the county ofTioga and State of Pennsylvania, have invented anew and usefulImprovement in Elastic Roofing; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, referencebring had to the accompanying drawings, firming part of thisspecification.

The nature of my invention relates to improvements in rooting; andconsists in the construction of roofs of the compound which will behereinafter described, when the same is applied in the manner which willbe more fullyshown on reference tothe accompanying drawings, wherein isshown a sectional view of a roof composed of the several constituentparts or chemical elements constituting my invention, and applied in themanner which I have found best adapted to the same.

A represents the portion of a building to be covered. B rel'rlesents thestrips of fclting, as commonly used for rooting purposes, laid on in thefollowing` manner: the eaves, the first sheet is folded under aboutone-third of its breadth, the second laid on with its lower edge evenwith the eave, and projecting above the upper edge of the first aboutone-third its breadth, and the third Oommencing at I sheet commencingwith its lower edge laid one-third its breadth above the eaves, so thatall parts of the roof are covered with three thicknesses of felt, thewhole being laid in hot cement and fastened to the roof by strips ofwood or tin laid on at proper distances apart, and secured with nails. Ithen cover the whole with the elastic compound, prepared as follows: Onepart asphaltum to six parts gastar, to he heated boiling hot; then addtive parts clean sand, one part boiled plaster, and one part commonpaint, to be mixed to the consistency of mortar, and while het spread onwith a trowel from one fourth to one-half inch in thickness, whichconstitutes, as I have found in practice, a very durable elastic roofing material, which is not liable to crack after it has become hard, orto be affected by the heat of the sun in warm weather.

Having thus fully described my invention, what I claim, and desire tosecure by Letters latent, is*

The elastic rooting composition made of the ingredients and in theproportions herein specified, compounded and applied in the manner setforth.

THOMAS E. WOOD.

Vitnesses:

E. P. MAsTERsoN, NOAH EVERITT.

